Home / 19,813.20-29,678.40-9,292.20

Finding the Fourth Proportional to 19,813.20, 29,678.40 and 9,292.20

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Solution

The fourth proportional to 19,813.20, 29,678.40 and 9,292.20 is: 13,918.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,813.20 : 29,678.40 = 9,292.20 : x
  2. Step 2: Convert to fraction form
    19,813.20/29,678.40 = 9,292.20/x
  3. Step 3: Cross multiply
    19,813.20x = 29,678.40 × 9,292.20
  4. Step 4: Simplify right side
    19,813.20x = 275,777,628.48
  5. Step 5: Solve for x
    x = 275,777,628.48/19,813.20
  6. Step 6: Final answer
    x = 13,918.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.